On 3/31/10 4:37 PM, "Igor Gashinsky" <i...@gashinsky.net> wrote:
> On Wed, 31 Mar 2010, Dan Wing wrote: > > :: Users running IE6 today are IPv4-only users. If/when they go > :: to IPv6, they will be running Windows 7 and whatever browser > :: is shipped by Microsoft. [jjmb] this is not what the Free people have indicated. I think this is a flawed assumption. > > Why do you say that? As far as I know, IE6 is an ipv6-capable browser, > as long as it's going to FQDN's.. So, what about IE6/XP users who > installed bittorent clients (or spyware/trojans) that enabled ipv6 for > them without the user knowing about it? [jjmb] Again from first hand experience, I can tell you there were unexpected non-trivial increase in P2P over IPv6 traffic. > > :: It seems solvably operationally, by asking ISPs to point their > :: IPv4-only subscribers at an ISP-operated DNS server which > :: purposefully breaks AAAA responses (returns empty answer), and > :: to point their dual-stack subscribers at an ISP-operated DNS > :: server which functions normally. [jjmb] Solvable perhaps, however, there are operational impacts that are non-trivial. Not to mention provisioning and in some cases financial implications. > :: > :: Advanced IPv4-only users wanting to do AAAA queries (e.g., > :: Teredo users, 6to4 users, etc.) should be sufficiently advanced > :: to point themselves at the ISP's normal nameserver or a > :: public DNS server on the Internet (e.g., Hurricane > :: Electric's, Google's, etc.). That won't affect users running > :: uTorrent (which uses Teredo to provide IPv6 connectivity) > :: because it doesn't do AAAA queries to find peers. [jjmb] what percentage of broadband users fall into the advanced category and will that be adequate to facilitate IPv6 adoption. I suspect no and this is not really an option in most cases for non-advanced users. > > This is *exactly* what we are proposing -- the feature to return empty > answers would be needed for ipv4-only subscribers in order to keep them > ipv4-only. Also, if a fully ipv6-capable user visits that person's home, > the recursor would then be able to make the call on if they should pass > through AAAA to that particular user or not... I am by no means advocating > to make this behavior a default, just a feature. > > Thanks > -igor > _______________________________________________ > DNSOP mailing list > DNSOP@ietf.org > https://www.ietf.org/mailman/listinfo/dnsop ========================================= John Jason Brzozowski Comcast Cable e) mailto:john_brzozow...@cable.comcast.com o) 609-377-6594 m) 484-962-0060 w) http://www.comcast6.net ========================================= _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
